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authorMartin Liska <mliska@suse.cz>2016-08-09 22:57:14 +0200
committerMartin Liska <marxin@gcc.gnu.org>2016-08-09 20:57:14 +0000
commitdcb1e1379ea52c33e5025d6e5842c43888888afa (patch)
tree187f4b8334dcc9b7d561d703c32cb57e5646f3a5 /libgcc
parent54b367dbd22e07e734a8632484e763bea16ced87 (diff)
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Fix POW2 histogram
* gcc.dg/tree-prof/val-prof-8.c: New test. * value-prof.c (dump_histogram_value): Swap pow2 and non-pow2 values. * libgcov-profiler.c (__gcov_pow2_profiler): Consider 0 as not power of two. From-SVN: r239304
Diffstat (limited to 'libgcc')
-rw-r--r--libgcc/ChangeLog5
-rw-r--r--libgcc/libgcov-profiler.c2
2 files changed, 6 insertions, 1 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index aa9400d..5b05a7c 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-08-09 Martin Liska <mliska@suse.cz>
+
+ * libgcov-profiler.c (__gcov_pow2_profiler): Consider 0 as not
+ power of two.
+
2016-07-29 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/_divkc3.c: Add copyright/license boilerplate.
diff --git a/libgcc/libgcov-profiler.c b/libgcc/libgcov-profiler.c
index e9471883..6da8a94 100644
--- a/libgcc/libgcov-profiler.c
+++ b/libgcc/libgcov-profiler.c
@@ -53,7 +53,7 @@ __gcov_interval_profiler (gcov_type *counters, gcov_type value,
void
__gcov_pow2_profiler (gcov_type *counters, gcov_type value)
{
- if (value & (value - 1))
+ if (value == 0 || (value & (value - 1)))
counters[0]++;
else
counters[1]++;